17.5 million people die of sudden cardiac death every year. This application allows users to call people nearby rather than distant hospital for first-aid, and get guidance for accident witnesses to perform first-aid to victim before others arrive, which helps to shorten rescue time. It also encourages users who lack first-aid knowledge to get free training and help victims. To make it easier for users to start, the interaction design of this app is simple and straightforward. The design concept is based on collaborative work, which propose an efficient possibility to handle sudden death.

Wang Pengfei is a graduate student studying for a master's degree in Zhejiang University. He is a designer, engineer, and optimization leader who focuses on computer supported collaborative work. He is passionate about the design and research of human-computer interaction. During his study, his grade was ranked as the first in his major and won a scholarship. In terms of practice, he has served as an experience design intern at Alibaba and Didi Chuxing, as a supply chain management trainee intern at General Electric, and as a product manager intern at NetEase.

S Lab is an academic group under Zhejiang University, it is started by a bunches of young design engineering students and programmers. It is dedicated on HCI (Human Computer Interaction) research and practice of innovation interaction interface. The name "SOS" symbolize our aim, to help those in need for a better life. It tries to enhance human perception and tackle real problem by design thinking.